Mn-based permanent magnets
Yang Jinbo1, 2, 3, †, Yang Wenyun1, 2, 3, Shao Zhuyin1, 2, 3, Liang Dong1, 2, 3, Zhao Hui1, 2, 3, Xia Yuanhua4, Yang Yunbo1
       

(color online) (a) Hysteresis loops of MnBi anisotropic powders measured at various angles, taken at 300 K. (b) The theoretical angular dependence of the Stoner different model, the nucleation field model developed by Kromuller, and the law. The experimental results for the coercive field and critical field H N of 7 h milled MnBi powder measured at 300 K.[55]